Zyxel ANT3316. Antenna gain level (max): 16 dBi, Frequency band: 5.15 - 5.875 GHz, Impedance: 50 Ω. Antenna type: Directional antenna, Antenna connector type: N-type, Polarization: Dual polarization. Width: 8.27" (210 mm), Depth: 8.27" (210 mm), Height: 2.87" (73 mm)